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Planck’s cooling system (at 20 degrees Kelvin), coloured

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Title Planck’s cooling system (at 20 degrees Kelvin), coloured

Released 27/02/2009 6:17 pm

Copyright ESA (image by AOES Medialab)

Description

To achieve the mission goals, the Planck instruments – the Low Frequency Instrument (LFI) and the High Frequency Instrument (HFI) - will operate at a few degrees above absolute zero. To achieve this, a series of cooling stages are required.

The picture shows the first cooling stage which brings the temperature of LFI and HFI down to around 20K.